Rotor assembly for electric motor
US11374451B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2019 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Dec 10, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2057/02034
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotor assembly is provided for an electric motor. The rotor assembly includes: a cylindrical magnet member having magnetization in both axial and radial directions, the magnet member being formed from a moldable magnetic material; and an output shaft receivable within the magnet member. An inner surface of the magnet member and an outer surface of the output shaft have complementarily-engagable interface elements thereon to prevent or limit dislocation of the magnet member and output shaft, and at least one of the interface elements is formed by overmolding of the magnet member and output shaft with the other of magnet member and output shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.